B - Ardiehl.de

HYDROSTATIC PUMP (Cont’d)
Disassembly (Cont’d)
Remove the snap ring and centering spring assembly
from the piston [A].
Disassemble the centering spring assembly as shown in
Figure [B]:
Remove the lock nut (Item 1) [B], nut (Item 2) [B], short
spring guide (Item 3) [B], spring (Item 4) [B], stop (Item
5) [B] and long spring guide (Item 6) [B] from the
centering screw (Item 7) [B].
Inspection
Clean all parts in solvent and use air pressure to dry them.
DO NOT use cloth or paper because small pieces of
material can get into the system and cause damage.
Lubricate all internal pump parts with clean hydraulic oil
before assembly.
Check the two bearing locater pins (Item 1) [C] in the end
housing. The pins must measure 0.0625–0.080 inch
(1,65–2,03 mm) from the end housing surface to the end
of the pins.
Check the shaft for wear or damage in the splined and
bearing areas [D].
Check the bearing for proper operation. Remove from the
shaft only if necessary to replace [D].
Revised June 96
–3–46–
A
B
C
D
1
2
3
1
4
1
5
CD–00106
6
7
CD–00105
CD–00098
CD–00110
853, 853H BICS Loader
Service Manual